Controlled Polymerization of 3-Hexyne, 4-Octyne, and 5-Decyne by Nb(CHCMe<sub>2</sub>Ph)(NC<sub>6</sub>F<sub>5</sub>)[OC(CF<sub>3</sub>)<sub>3</sub>](PMe<sub>3</sub>)<sub>2</sub> Catalyst: Structural Analysis of Catalytically Inactive Species
Reaction of Nb(CHSiMe3)(NAr)[OC(CF3)3](PMe3)2 (Ar = 2,6-Me2C6H3, C6F5) with 3-hexyne (10 equiv) afforded alkyne coordinated species, Nb(NAr)[OC(CF3)3](EtC═CEt)(PMe3)2, accompanied by formation of 1-trimethylsilyl-2,3,4,5-tetraethyl-1,3-cyclopentadiene, which was inactive for 3-hexyne polymerization. In contrast, the neophylidene analogue Nb(CHCMe2Ph)(NC6F5)[OC(CF3)3](PMe3)2 enabled polymerizations of 3-hexyne, 4-octyne, and 5-decyne to proceed efficiently in a controlled manner without formation of inactive species.
Authors
- Kotohiro Nomura (ORCID: https://orcid.org/0000-0003-3661-6328)
- Kanchana Chatchaipaiboon (ORCID: https://orcid.org/0000-0003-2217-2826)
- Akira Nishiyama (ORCID: https://orcid.org/0000-0002-5139-8341)
Institutions
- Tokyo Metropolitan University (JP)
Publication Details
- Journal
- Organometallics
- Published
- 2025-07-18
- DOI
- https://doi.org/10.1021/acs.organomet.5c00177
- Citations
- 2
- Primary Topic
- Synthetic Organic Chemistry Methods
- Type
- article
- Field-Weighted Citation Impact
- 1.87
Funders
- Tokyo Metropolitan Government
- Japan Society for the Promotion of Science